The novel “The Monsters Inside” by Stephen Cole was published for the first time in 2005.

The Ninth Doctor brings Rose Tyler to another planet. The girl expects to find some aliens, instead she and the Doctor find human beings and they discover that it’s the Justicia system, a huge prison that includes the system’s six planets. The presence of the two travelers is immediately discovered and guards quickly arrive to capture them.

The Doctor and Rose are separated, imprisoned in different sections of the prison. The prison authorities believe that they’re criminals came to free some inmates and don’t believe in their innocence. The two travelers must find a way to escape from a prison in which humans but also aliens from various systems are locked up and the presence of Slitheen suggests that there’s something very strange.